A lighting apparatus includes a light source module, a light passing cover, a base housing, a first end module and a second end module. The light source module includes a plurality of LED modules. These LED modules may have different types. Each type has a different optical parameter, like color temperature, color, light intensity, color rendering index. The light passing cover allows a light of the light source module to pass through. The base housing is connected to the light passing cover forming a container space. The base housing has an elongated shape. The first end module and the second end module are attached at two opposite ends of the base housing for sealing the container space. The first end module is selectively connected to another second end module of another lighting apparatus for routing electricity and a control signal.